preparation of medicinal soap products using the … · 2019. 2. 1. · soap mixture and mixed well...
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International Journal of Pharmacy and Biological Sciences
ISSN: 2321-3272 (Print), ISSN: 2230-7605 (Online)
IJPBS | Volume 6 | Issue 2 | APR-JUN | 2016 | 07-16
Research Article – Biological Sciences
International Journal of Pharmacy and Biological Sciences Wijetunge W.M.A.N.K & Perera B.G.K*
www.ijpbs.com or www.ijpbsonline.com
7
PREPARATION OF MEDICINAL SOAP PRODUCTS USING THE LEAF EXTRACTS
OF PUNICA GRANATUM (POMEGRANATE)
Wijetunge W.M.A.N.K1 and Perera B.G.K1*
1Department of Chemistry, Faculty of Science, University of Colombo, Colombo 03, Sri Lanka-00300
*Corresponding Author Email: [email protected] ABSTRACT The present study was carried out to prepare medicinal soaps with antibacterial and/or antioxidant activities using leaf extracts of pomegranate. Leaf extracts of pomegranate were obtained by maceration, soxhlet extraction and sonication using a series of solvents. The extracts were screened for antibacterial activity using the disk diffusion assay carried out against B.cereus, S.typhimurium, S.aureus and E.coli. The Folin Cioclteau (FC) and DPPH radical scavenging assays were used to determine the total antioxidant capacity (AOC) and the DPPH radical scavenging activity (RSA) respectively. Presence of phytochemical constituents of bioactive extracts was investigated. Bioactive leaf extracts were used to prepare a liquid and a solid soap and their effectiveness was determined. Methanol soxhlet extract was the best bioactive extract exhibiting considerable antibacterial activity against S.aureus and B.cereus and the highest total AOC of 603 µg PGE/mg. It displayed a 94% RSA as well. Therefore, this extract was used in the liquid and solid soap preparations. The liquid soap inhibited the growth of S.aureus and B.cereus at 25 mg/mL and 10 mg/mL concentrations respectively. A thumb impression test indicated a reduction of the microbial growth upon the usage of the medicinal soap displaying its antibacterial effectiveness. The liquid soap displayed 6.7 times better AOC whereas the solid soap indicated 2.5 times better AOC compared to their control soaps. The solid soap did not display any significant antibacterial activity even at a 100 mg/mL concentration. Leaf extracts of pomegranate can be successfully utilized to obtain medicinal soaps with improved antibacterial and antioxidant activities.
KEY WORDS Pomegranate, antibacterial activity, antioxidant activity, medicinal soap.
INTRODUCTION
The soaps that are being used in our day to day life
have a history going back for about six thousand
years. The ancient Babylonians discovered that mixing
animal fats with wood ash and water created a
cleansing substance which was latterly known as
“soap”.[1] The basic method of soap making is known
as saponification.[2] Irrespective of the physical status
of the soap, a combination of oil and a base is used
for soap preparation. In solid soaps NaOH is used as
the base whereas KOH is used to obtain liquid
soaps.[2]
Medicinal soaps are a simple variation of the normal
soaps where synthetic or natural bioactive ingredients
are added into the basic soap medium to give a vast
variety of biological activities to the final
product.[3,4,5,6,7] However, due to the undesirable
side effects of synthetic substances, it is preferential
to avoid the use harmful synthetic chemicals from
medicinal soap products.[3] In recent years, the plant
based natural products have become an attractive
alternative to enhance the important biological
characteristics of medicinal soaps.[3,4,5,6,7] The
replacement of synthetic foaming agents such as SLS
by saponins,[8] synthetic antibacterial agents such as
Triclosan[9] by natural antibacterial agents and
synthetic antioxidants such as BHT[3] by natural
phenolic compounds have served to overcome many
of the side effects associated with the medicinal
soaps based on synthetic ingredients. Coconut oil,
olive oil, neem oil, turmeric, sandalwood, venivel,
jasmine and lemon essence are few of the most
commonly found ingredients in skin care products
including medicinal soaps.[10]
mailto:[email protected]
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International Journal of Pharmacy and Biological Sciences Wijetunge W.M.A.N.K & Perera B.G.K*
www.ijpbs.com or www.ijpbsonline.com
ISSN: 2230-7605 (Online); ISSN: 2321-3272 (Print)
Int J Pharm Biol Sci.
8
The fruit of Punica granatum, also known as
pomegranate is extensively used for the value
addition of cosmetic products[11] including medicinal
soaps. Pomegranate is distributed throughout the
Mediterranean region of Asia, Africa and Europe[12]
and is known to possess a number of medicinal
properties from ancient times. Various parts of the
pomegranate plant including leaves, fruits, flowers
and bark have been used to treat a number of
diseases like dysentery, diarrhea, respiratory diseases,
skin disorders, hemorrhage, arthritis etc.
Furthermore, the investigations suggest that the fruit
juice increases the high density lipoproteins, reduce
blood pressure and therefore prevent strokes and
heart attacks.[12] Pomegranate is known to possess
antibacterial and antioxidant activities[13] and is
reported to be rich in phytochemicals including
flavonoids, condensed tannins and hydrolysable
tannins.[14] The pomegranate fruit is highly
expensive, seasonal and is a common food source,
and thus replacing the pomegranate fruit with a
different plant part could be more economically
effective. However, there is only very limited
publications are available for the use of other plant
parts of pomegranate except the fruit. Pomegranate
leaves are readily available, inexpensive and there
have been various medicinal uses of it from ancient
times.[12] Therefore, during this research, the
effectiveness of using Punica granatum leaves in
medicinal soap preparations was investigated as an
alternative to its fruit towards value addition of
consumer products. A wide range of extraction
conditions were investigated towards identifying the
extraction technique and solvent system that yields
the best bioactive leaf extracts of pomegranate. The
extract with the best antibacterial and antioxidant
activities was incorporated into a liquid and a solid
soap preparation.
MATERIALS AND METHODS
Materials
Mueller Hington Agar (MHA) was purchased from
Royal Surgical, Colombo, Sri Lanka. Gentamycin, from
Union Chemist Pvt. Ltd., Sri Lanka. Detergent grade
soft soap was purchased from Glorchem Enterprises,
Sri Lanka. Methylated spirit, Coconut oil and Palm oil
were purchased from local market. All the other
chemical reagents including pyrogallol and 2,2-
diphenyl-1-picrylhydrazyl (DPPH) were Sigma Aldrich
and the bacterial culture media were bacteriological
grade Agar and LB Broth all obtained from the
Department of Chemistry, University of Colombo.
Analytical grade solvents; methanol, ethyl acetate,
hexane which were double distilled prior to use were
also obtained from Department of Chemistry,
University of Colombo.
Instruments
An electronic balance (OHAUS Pioneer PA313), Stirrer
hot plate (IKEA RH B1 S22), Sonicator (Grant XUB12),
Orbital incubator (Stuart S1500), Oven (Memmert
Loading modell 100-800), Rotary evaporator (Type N-
N ser no-10823000), Laminar flow (BIOBASE),
Autoclave (KT 30-SD No-105370), Jenway 6300
spectrophotometer were used during this research
study.
Plant identification and preparation of crude plant
extracts
All plant parts were authenticated by the Department
of Plant Sciences, University of Colombo, Sri Lanka.
Extractions were carried out with well dried, coarsely
ground Punica granatum leaves from maceration,
soxhlet extraction and sonication using methanol,
ethyl acetate, hexane as the solvents according to
previously published protocols.[12,14] The macerated
extract was obtained by adding 100 mL of the solvent
to 5 g of coarsely ground leaves and keeping in an
orbital incubator at 37 ˚C for 24 hours. The soxhlet
extract was obtained by mixing of 10 g of coarsely
ground leaves with 200 mL of the solvent for 3 hours
using the soxhlet apparatus. Sonication was carried
out with 5 g of coarsely ground leaves and 100 mL of
the solvent at room temperature for 2 hours to obtain
the sonicated extract. All the extracts were dried with
anhydrous Na2SO4, filtered and concentrated to a
minimum volume. The extracts were stored at 4 ˚C
until further use.
Investigation of bioactivities of plant extracts
Antibacterial activity (Disk diffusion assay)
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International Journal of Pharmacy and Biological Sciences Wijetunge W.M.A.N.K & Perera B.G.K*
www.ijpbs.com or www.ijpbsonline.com
ISSN: 2230-7605 (Online); ISSN: 2321-3272 (Print)
Int J Pharm Biol Sci.
9
The 6 mm diameter sterilized filter paper disks were
impregnated with plant extracts and the controls of
known concentrations. Solvent was used as the
negative control while 1 mg/mL Gentamycin was used
as the positive control. The disk diffusion assays were
carried out according to previously published
protocols against Bacillus cereus (ATCC 11778),
Salmonella typhimurium (ATCC 700720),
Staphylococcus aureus (ATCC 25923) and Escherichia
coli (ATCC 35218).[ 7,15] The plates containing the
impregnated disks were incubated overnight at 37 ⁰C
and the diameters of the inhibition zones were
measured. The plant extracts which indicated the
highest antibacterial activity were tested for their
MICs using the same disk diffusion assay protocol. All
the experiments were carried out in triplicate.
Total antioxidant activity (Folin Ciocalteu assay)
To 0.1 mL of each test sample prepared using
methanol, 2 mL of 2 % (w/v) NaHCO3 solution was
added and the content was kept for incubation in
dark for 2 minutes. Next, a volume of 0.1 mL of the
Folin Ciocalteu reagent was added to each tube and
further incubated for 30 minutes at room
temperature. The absorbance of the resulting
solution was measured at 750 nm. The AOCs of each
sample was determined using a pyrogallol standard
curve.[16] All the experiments were carried out in
triplicate.
Radical scavenging activity (DPPH radical scavenging
assay)
To 50 µL of the plant extract of known concentration,
1.95 mL of a 24 mg/L DPPH solution prepared in
methanol was added and mixed well. After 30
minutes of incubation at room temperature under
dark conditions, absorbance of all the samples was
measured at 517 nm against the blank. Percentage
RSA (RSA%) of the extracts was calculated using the
following equation.[17] All the experiments were
carried out in triplicate.
Absorbance of the test sample – At Absorbance of the control – Ac
Preparation of medicinal soap products
Liquid soap
A 100 mg portion of the methanol soxhlet extract of
pomegranate leaves was added to a 10 mL liquid soap
solution (1 g of commercial soft soap dissolved in 10
mL of distilled water). [14,16,18,19]. Control soap was
prepared using the same procedure without the
addition of the plant extract.
A weight of 12 g of coconut oil and 54 g of palm oil
was mixed and stirred well at room temperature for
15 minutes. Thereafter, 51 mL of 20 % NaOH solution
was added and the soap mixture was well stirred
approximately for 30 minutes until formation of soap
was visible. An amount of 0.9 g the active
pomegranate extract was added to 30 g of the above
soap mixture and mixed well to prepare a solid soap
containing 3% (w/w) methanol soxhlet extract. The
mixture was poured into moulds and allowed to
solidify for 12 hours. The resultant solid soaps were
taken out of the moulds and kept in open air for 7
days for drying.[18] Control soap was prepared using
the same procedure without the addition of the plant
extract.
Determination of antibacterial and antioxidant
activities of prepared medicinal soaps
Samples of the test and control liquid and solid soaps
of known concentration were used to carry out the
disk diffusion and FC assays using the protocols
reported in the previous section (Investigation of
bioactivities of plant extracts). The increment of the
antibacterial or antioxidant activity of the test
medicinal soap was monitored in comparison to their
control soaps. The experiments were carried out in
triplicates.
Thumb impression test
With proper distance, thumb impressions of hands
exposed to the environment were placed on a sterile
MHA plate. Then, the impressions of the two separate
thumbs, one, washed with the medicinal soap and the
other, with the control soap were placed on the same
MHA plate without any overlaps of thumbprints. The
pattern of microbial growth on the plates was
observed after an incubation period of 24 hours at 37
˚C. [7, 19]
Phytochemical screening of pomegranate leaf
extracts
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International Journal of Pharmacy and Biological Sciences Wijetunge W.M.A.N.K & Perera B.G.K*
www.ijpbs.com or www.ijpbsonline.com
ISSN: 2230-7605 (Online); ISSN: 2321-3272 (Print)
Int J Pharm Biol Sci.
10
The pomegranate leaf extracts with significant
bioactivities were screened for the presence of
various phytochemical constituents according to the
previously published protocols. [12, 19]
RESULTS AND DISCUSSION
This research was carried out to prepare medicinal
soap products using leaf extracts of Punica granatum.
According to the available published data,
incorporation of Punica granatum leaf extracts into
any soap preparations have not been reported up to
date.
Percentage yields of crude leaf extracts
Percentage yields for the crude leaf extracts of
pomegranate obtained under different extraction
technique and solvent combinations are indicated in
Table 1.
Table 1: Percentage yields of the crude leaf extracts.
Solvent Percentage yield (%)
Maceration Soxhlet extraction Sonication
Methanol 18 19 11
Ethyl acetate 4 5 2
Hexane 1 12 2
In general, irrespective of the extraction method, the
polar methanolic extracts exhibited relatively high
percentages of crude yields compared to the other
solvents. The important bioactivities of these plant
extracts were further analyzed through suitable
bioassays.
Investigation of bioactivities of plant extracts
Antibacterial activity
The antibacterial activity results obtained for the
different leaf extracts are shown in Table 2.
Only the methanoilc extracts of pomegranate leaves
exhibited antibacterial activity whereas no significant
antibacterial activity was observed for the ethyl
acetate and hexane extracts. The methanolic soxhlet
leaf extract exhibited the highest antibacterial activity
with respect to the other methanolic extracts.
However, the antibacterial activity of the methanoilc
soxhlet extract was best against S.aureus and B.cereus
and no growth inhibition was observed with E.coli and
S.typhimurium at the tested concentration. The
Minimum Inhibitory Concentrations (MICs) of the
methanolic soxhlet extract against S.aureus and
B.cereus were found to be 25 mg/mL and 10 mg/mL
respectively. (Table 3)
Therefore, according to the findings of this research,
methanolic soxhlet extract was selected to be used to
attain antibacterial activity in medicinal soap
preparation.
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International Journal of Pharmacy and Biological Sciences Wijetunge W.M.A.N.K & Perera B.G.K*
www.ijpbs.com or www.ijpbsonline.com
ISSN: 2230-7605 (Online); ISSN: 2321-3272 (Print)
Int J Pharm Biol Sci.
11
Table 2: Disk diffusion assay results of different leaf extracts of pomegranate.
Extraction method Solvent Diameter of inhibition zones (cm)c
B.cereus S.typhimurium S.aureus E.coli
Maceration
Methanola NI NI 0.8±0.1 NI
Ethyl acetateb NI NI NI NI
Hexaneb
NI NI NI NI
Soxhlet
Methanol 1.1±0.0 NI 1.1±0.1 NI
Ethyl acetate NI NI NI NI
Hexane NI NI NI NI
Sonication
Methanol NI NI 0.9±0.1 NI
Ethyl acetate NI NI NI NI
Hexane NI NI NI NI
Negative control NI NI NI NI
Positive control (gentamycin) 2.0±0.1 2.0±0.0 1.9±0.0 1.4±0.1 a100 mg/mL, b25 mg/mL, cmean±SEM, n=3
Table 3: MIC of the methanolic soxhlet extract of pomegranate leaves against S. aureus and B.cereus.
Concentration (mg/mL) Diameter of inhibition zones (cm)a
S. aureus B.cereus
5 NI NI 10 NI 0.7±0.0 25 0.7±0.0 0.8±0.0 50 1.0±0.1 0.9±0.1 75 1.0±0.0 0.9±0.1 100 1.1±0.0 1.1±0.1 Positive control (gentamycin) 1.9±0.0 2.0±0.1 Negative control (methanol) NI NI
amean±SEM, n=3
Antioxidant activity and DPPH radical scavenging activity
All the pomegranate plant extracts were tested with the FC assay to determine their total AOC and the results are
shown in Table 4.
Table 4: AOCs of different leaf extracts of pomegranate from FC assay.
Solvent AOC in µg (PGE)/mg
a
Maceration Soxhlet extraction Sonication
Methanol 546±14 603±35 329±14 Ethyl acetate 31±1 17±2 7±1 Hexane 17±1 15±1 19±3
amean±SEM, n=3
The yellow colored molybdotungstate complex
[Mo(VI)] in the FC reagent is reduced to a [Mo(V)]
complex which is blue in color in the presence of
phenolic and other reducing substances in the
sample.[20] This assay is usually utilized to measure
the Total Phenolic Content (TPC) of a sample due to
its high reactivity with various phenolic
compounds.[20] However, since it reacts with many
other reducing agents that can act as antioxidants, it
is has been shown to be used as a method to
determine the total AOC of a sample more
accurately.[20,21] Total AOC could be somewhat
greater for a natural plant extract than the TPC which
is the net contribution from phenolic compounds in
the sample.[21] According to the results of the FC
assay, the total AOC of the methanolic soxhlet extract
was significantly higher than that of the other
pomegranate leaf extracts and it was further analyzed
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International Journal of Pharmacy and Biological Sciences Wijetunge W.M.A.N.K & Perera B.G.K*
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Int J Pharm Biol Sci.
12
for its radical scavenging activity, which was found to
be 94±0% from the DPPH radical scavenging assay.
Therefore, the methanolic pomegranate leaf extract
obtained by soxhlet extraction was selected to be
used to attain the required antioxidant activity of the
medicinal soaps prepared during this study.
Phytochemical studies
Pomegranate leaves are well known for their
antibacterial and antioxidant activities.[7-8] It has
been reported that the pomegranate leaves contain
punicalin, punicafolin as tannins and luteolin,
apigenin as flavone glycosides.[14] Accordingly, when
the methanolic soxhlet extract which displayed the
best antibacterial and antioxidant activities during
this study was subjected to phytochemical analyses, it
revealed the presence of a number of secondary
metabolites and reducing sugars (Table 5).
Table 5: Results of phytochemical analysis of the antibacterial and antioxidant active methanol soxhlet extract.
Alkaloiods Phenols and tannins Reducing sugars Steroids and terpenoids Saponins
+ + + + +
The presence of phenols and tannins which are well
known natural antioxidants reflect the high
antioxidant capacity of this extract.[3,22] Additionally,
the presence of phenols which are involved in plant
defense mechanisms[3] also support the antibacterial
properties displayed by this extract. The presence of
compounds like saponins in pomegranate extract
makes it ideal to be used in medicinal soap
preparations since the saponins can act as natural
foaming agents. This will also help to minimize the
use of synthetic foaming substances in medicinal soap
products.
Preparation of soap products based on pomegranate
leaf extracts
Two medicinal soaps were prepared using the methanolic soxhlet leaf extract of pomegranate andtheir effectiveness was tested against the control soaps which did not contain the plant extract. The prepared soaps are shown in Figure 1.
a) b) c) d) Figure 1: Various soaps prepared during the study a) liquid soap prepared with the methanolic soxhlet extract,
b) control liquid soap c) solid soap prepared with the methanolic soxhlet extract d) control solid soap.
Assessing the biological activities of the prepared medicinal soaps
Antibacterial activity
The antibacterial activities of the prepared medicinal soaps are shown in Table 6.
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International Journal of Pharmacy and Biological Sciences Wijetunge W.M.A.N.K & Perera B.G.K*
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ISSN: 2230-7605 (Online); ISSN: 2321-3272 (Print)
Int J Pharm Biol Sci.
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Table 6: Disk diffusion assay results for the prepared soap products.
Sample type Diameter of inhibition zones (cm)c
B. cereus S. aureus
Test liquid soapa
1.6±0.1 1.0±0.1 Control liquid soap 1.0±0.1 0.7±0.0 Test solid soap
b 0.7±0.0 NI
Control solid soap 0.7±0.0 NI Positive control (gentamycin) 2.1±0.1 1.9±0.0
a100 mg/mL,
b3% w/w,
cmean±SEM, n=3
According to the results shown in Table 6, the
methanolic soxhlet extract which showed
antibacterial activity as the pure extract at a 100
mg/mL concentration (Table 2) was found to be active
against the same bacterial species when the
pomegranate liquid medicinal soap was prepared
with the same final concentration of the extract. The
activity of the soap was not tested against S.
typhimurium and E. coli since they were not inhibited
by the 100 mg/mL pure extract. The smaller sized
inhibition zones observed for the control soaps could
be due to the natural antibacterial activity of coconut
oil which is used to prepare the soap base.[23] The
enhanced growth inhibition displayed by the test
liquid soap indicates the ability of the selected plant
extract to provide the antibacterial activity to a liquid
medicinal soap. However, the solid medicinal soap
containing 3% of the pomegranate methanol soxhlet
extract did not show a considerable antibacterial
activity with respect to its control soap. This could be
due to the degradation of antibacterial agents resent
in the plant extract during the solid soap preparation
process.
Further antibacterial tests were carried out to
investigate the minimum amount of plant extract that
need to be added to the liquid soap in order to attain
a net antibacterial activity compared to the control
soap. The results of this study are shown in Table 7.
The liquid soap indicated antibacterial activity even at
10-25 mg/mL concentrations indicating the
antibacterial effectiveness of the selected
pomegranate leaf extract in liquid soap.
Table 7: Dose dependent antibacterial effect of the pomegranate methanolic soxhlet extract in the liquid
medicinal soap against S. aureus and B.cereus.
Concentration (mg/mL) Diameter of inhibition zones (cm)a
S. aureus B.cereus
10 NI 1.2±0.1 25 0.8±0.0 1.4±0.1 50 0.9±0.1 1.4±0.2 75 1.0±0.1 1.4±0.1 100 1.1±0.1 1.5±0.1 150 1.1±0.1 1.6±0.1 200 1.1±0.1 1.6±0.1 Control liquid soap NI 1.1±0.1 Positive control (gentamycin) 1.9±0.1 2.0±0.0
amean±SEM, n=3
Furthermore, a thumb impression test was carried
out to investigate the effectiveness of the liquid
medicinal soap and the results are shown in Figure 2.
As expected, the number of bacterial colonies grown
on the thumbprints kept with washed thumbs are
lower than those grown on the thumbprints made
with the unwashed thumbs [b and d vs. a and c in
Figure 2]. The pomegranate liquid soap indicated a
better efficiency in removing the microbes from the
thumb washed with it which is indicated by the
reduced number of bacterial colonies grown on the
thumbprint made with the thumb washed with the
pomegranate liquid soap (Figure 2 d), compared to
the control thumbprint (Figure 2 b). When consider
the overall results of the thumb impression test, it can
be concluded that the liquid medicinal soap prepared
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International Journal of Pharmacy and Biological Sciences Wijetunge W.M.A.N.K & Perera B.G.K*
www.ijpbs.com or www.ijpbsonline.com
ISSN: 2230-7605 (Online); ISSN: 2321-3272 (Print)
Int J Pharm Biol Sci.
14
using the methanolic soxhlet extraction of
pomegranate leaves can display considerable
antibacterial activity.
Fig. 2: Thumbprints of differently treated thumbs. a) and c) unwashed thumb, b) thumb washed with the
control liquid soap, d) thumb washed with 100 mg/mL pomegranate liquid soap.
Antioxidant activity
The antioxidant activities of the prepared medicinal
soaps were investigated using the FC assay and the
results are indicated in Table 8. The AOC of the
pomegranate liquid soap was about 6.7 times better
than the control liquid soap. A similar observation
was made with the solid pomegranate soap which
indicated 2.5 times better AOC compared to the solid
control soap.
Table 8: AOCs of the prepared soap products.
Soap type AOC in µg (PGE)/mgc
Test liquid soapa 20±0
Control liquid soap 3±0
Test solid soapb 20±1
Control solid soap 8±1 a0.03% (w/v)b, 3% (w/w), cmean±SEM, n=3
The liquid soap prepared during the study using the
selected pomegranate leaf extract displayed both
antibacterial and antioxidant activities while the solid
soap displayed only antioxidant activity with respect
to the respective control soaps. Therefore, it could be
possible that two different compounds or classes of
compounds might have been responsible for the
antibacterial and antioxidant activities in these soap
products and their biological activities could be
different in the two different soap media. Processing
of the solid soap after the addition of the extract to
obtain the final solid product might have led the
antibacterial active compounds to degradation,
whereas in liquid form these compounds must have
been able to retain their stability to produce the
desired activity of the final soap product. However,
the bioactive ingredients in the methanolic soxhlet
extract that were responsible for its antioxidant
activity seemed to be stable regardless of the nature
of the soap preparation process and thus improved
the antioxidant activity of both the solid and liquid
soaps with respect to their control soaps.
CONCLUSION
Applicability of the leaves of pomegranate (Punica
granatum) in preparation of medicinal soap products
have not been extensively investigated so far whereas
its fruit is widely used in such applications as
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International Journal of Pharmacy and Biological Sciences Wijetunge W.M.A.N.K & Perera B.G.K*
www.ijpbs.com or www.ijpbsonline.com
ISSN: 2230-7605 (Online); ISSN: 2321-3272 (Print)
Int J Pharm Biol Sci.
15
previuosly reported. According to this research, it was
found that the methanolic soxhlet extract of
pomegranate leaves could be an effective alternative
to the expensive and seasonal pomegranate fruit
towards preparing medicinal soap products. The
methanolic soxhlet extract indicated the highest
percentage yield and the best antibacterial and
antioxidant activities among all the tested leaf
extracts. The liquid medicinal soap prepared using
this extract retained both the original antibacterial
and antioxidant activities displayed by the extract
whereas the solid medicinal soap only displayed the
antioxidant activity. It can be concluded that the
methanolic soxhlet extract of pomegranate is more
suitable towards preparing liquid medicinal soap
products to obtain both tested bioactivities.
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International Journal of Pharmacy and Biological Sciences Wijetunge W.M.A.N.K & Perera B.G.K*
www.ijpbs.com or www.ijpbsonline.com
ISSN: 2230-7605 (Online); ISSN: 2321-3272 (Print)
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*Corresponding Author: Perera B.G.K* Email: [email protected]
mailto:[email protected]